Don't build NFC in open-source builds. It's not meant to be used there.

Bug: 4196003
Change-Id: If27cdb243936dd6035ab9e6278a615e69dee9971
diff --git a/device_base.mk b/device_base.mk
index 3c05331..cd43b55 100644
--- a/device_base.mk
+++ b/device_base.mk
@@ -96,13 +96,6 @@
 	libstagefrighthw \
 	com.android.future.usb.accessory
 
-# NFC
-PRODUCT_PACKAGES += \
-	libnfc \
-	libnfc_jni \
-	Nfc \
-	Tag
-
 # Input device calibration files
 PRODUCT_COPY_FILES += \
 	device/samsung/crespo/mxt224_ts_input.idc:system/usr/idc/mxt224_ts_input.idc